From 9ee702e075bff68fec1b5a0991d1d753cd5dc93e Mon Sep 17 00:00:00 2001
From: Alex Duan <417921451@qq.com>
Date: Wed, 28 Dec 2022 13:18:38 +0800
Subject: [PATCH] fix: forbid input tbname in scalar expression if not nested
 query

---
 src/client/src/tscSQLParser.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index f2d5997d3a..f8f8c5db2c 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1941,7 +1941,9 @@ static int32_t handleScalarTypeExpr(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32
   size_t numOfNode = taosArrayGetSize(colList);
   for(int32_t k = 0; k < numOfNode; ++k) {
     SColIndex* pIndex = taosArrayGet(colList, k);
-    if (TSDB_COL_IS_TAG(pIndex->flag)) {
+
+    if (TSDB_COL_IS_TAG(pIndex->flag) || (strcasecmp(pIndex->name, TSQL_TBNAME_L) == 0 && pQueryInfo->pUpstream &&
+                                          taosArrayGetSize(pQueryInfo->pUpstream) == 0)) {
       tExprTreeDestroy(pNode, NULL);
       taosArrayDestroy(&colList);
 
-- 
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